Restore Factory Suspension Geometry And Dampen Harsh Impacts With Precision-Calibrated Progression

This 2.5‑inch Stage 1 upgrade delivers controlled articulation and repeatable performance specifically for 2017–2019 4WD gas Ford F‑250 and F‑350 Super Duty crew cabs.

• Remote Expansion Pack Damping shifts compression load away from internal valve stacks into external aluminum reservoirs, eliminating shock fade and converting punishing washboard feedback into smooth, progressive energy dissipation.
• Dual-Rate Coil Springs apply measured upward force to realign control arm angles, supporting clean clearance for up to 35×12.50‑inch tires straight out of the box, or up to 37×12.50‑inch rubber with minimal inner fender modification.
• Verified Fitment Boundaries applies strictly to four-wheel-drive gasoline platforms and excludes Tremor equipped models (factory 1.5″ front lift), cab-and-chassis frames, and diesel configurations to prevent unwanted suspension geometry violations.
• Controlled Wheel Offset Requirements pairs cleanly with 5.25‑inch backspacing or 6mm offset rims to eliminate inner pinch-point contact during full bump compression or maximum steering lock.
• Trail-Grade Build Architecture utilizes high-density polyurethane bushings and corrosion-treated alloy shock cylinders rated for sustained off-road cycles, replacing brittle spacer inserts and stamped plates that fracture under dynamic torsional stress.
• Bolt-On Compatibility Framework ships with direct-replacement mounting hardware, though integrating extended brake lines (kit 61111) for single rear wheels and installing an adjustable front track bar guarantees accurate axle centerlining and stops premature edge-wear.